Verified answer

No the Wiimote is only for traveling with your Mii's. you'll have to buy an SD card if you want to take the save file to a friends house. Note: Saved games can't be played off an SD card you'll have to move the file to your friends machine first.

thinking the video games that are like that, i think it is because they have your WiFi Connection code on them, and having 2 human beings attempting to play on line on diverse platforms with an analogous WiFi code would reason issues.